

 Put coefficients of IIR filter.
 Calculate its frequency response.
 Put text data as input of the filter.
 See how the input is filtered.



 FIR version of the applet above.



 Design Low Shelve, High Shelve, Peaking, Notch filters.
 See the characteristics.
 Get coefficients.



 Design equalizers by Window Function Algorithm.
 See the characteristics.
 Get coefficients.



 Put text data as input of FFT.
 Calculate spectrum.
 See which frequency is dominant.



 Generate sine, cosine, square and triangle waves.
 Quantize the data.



 Drag and Drop CR components.
 Doubleclick to change parameters.
 See the response of CR Filters.



 Put Laplace transfer function.
 Get Step and Impulse response.



 Calculate polynomial roots up to 6th order.
 Complex roots.
 Plot the function on XY plate.



 Focus servo of CD's pickup.
 PD control.
 This contents is for elearning.



 Hamming, Hanning, Blackman, BlackmanHarris or Bartlett Window.
 Quantize them in bin, dec or hex.


email: info@digitalfilter.com 
